/* ===== Reset & Base ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
:root {
  --pink: #E75480;
  --pink-light: #FCE4EC;
  --pink-bg: #FFF0F5;
  --text: #1A202C;
  --text-light: #718096;
  --bg: #FFFFFF;
  --bg-alt: #FFF8FA;
  --border: #F0D0D8;
  --radius: 10px;
  --shadow: 0 2px 8px rgba(231,84,128,0.08);
  --shadow-hover: 0 6px 20px rgba(231,84,128,0.15);
  --max-width: 1120px;
  --header-h: 64px;
}
html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  color: var(--text); background: var(--bg); line-height: 1.6;
}
a { color: var(--pink); text-decoration: none; }
a:hover { color: #C2185B; }
.container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }

/* ===== Header ===== */
.header {
  position: fixed; top: 0; left: 0; right: 0; height: var(--header-h);
  background: rgba(255,255,255,0.96); backdrop-filter: blur(8px);
  border-bottom: 1px solid transparent;
  z-index: 100; transition: box-shadow 0.3s, border-color 0.3s;
}
.header.scrolled {
  border-bottom-color: var(--border);
  box-shadow: 0 2px 12px rgba(231,84,128,0.1);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; height: var(--header-h); }
.logo { font-size: 22px; font-weight: 700; color: var(--text); }
.logo span { color: var(--pink); }
.nav { display: flex; gap: 28px; }
.nav a { font-size: 15px; color: var(--text-light); font-weight: 500; transition: color 0.2s; }
.nav a:hover { color: var(--pink); }
.menu-toggle { display: none; background: none; border: none; font-size: 24px; cursor: pointer; }

/* ===== Hero ===== */
.hero {
  padding: calc(var(--header-h) + 80px) 0 80px;
  background: linear-gradient(135deg, var(--pink-light) 0%, #F8BBD0 50%, #F48FB1 100%);
  text-align: center;
}
.hero h1 { font-size: 42px; font-weight: 800; color: var(--text); margin-bottom: 12px; }
.hero-desc { font-size: 18px; color: var(--text-light); margin-bottom: 36px; }
.hero-btns { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.btn-primary {
  display: inline-block; padding: 14px 40px; border-radius: var(--radius);
  background: var(--pink); color: #fff; font-size: 16px; font-weight: 600;
  transition: all 0.2s;
}
.btn-primary:hover { background: #C2185B; color: #fff; transform: translateY(-2px); box-shadow: var(--shadow-hover); }
.btn-secondary {
  display: inline-block; padding: 14px 40px; border-radius: var(--radius);
  background: transparent; color: var(--pink); border: 2px solid var(--pink);
  font-size: 16px; font-weight: 600; transition: all 0.2s;
}
.btn-secondary:hover { background: var(--pink); color: #fff; }

/* ===== Sections ===== */
.section { padding: 80px 0; }
.section-alt { background: var(--bg-alt); }
.section-title { font-size: 30px; font-weight: 700; text-align: center; margin-bottom: 8px; }
.section-desc { font-size: 16px; color: var(--text-light); text-align: center; margin-bottom: 48px; }

/* ===== Card Grid (月子中心) ===== */
.card-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.card {
  background: #fff; border: 1px solid var(--border); border-radius: 12px;
  padding: 28px 20px; transition: all 0.25s;
}
.section-alt .card { background: #fff; }
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); border-color: var(--pink); }
.card h3 { font-size: 18px; font-weight: 700; margin-bottom: 6px; }
.card-meta { font-size: 13px; color: var(--pink); font-weight: 600; margin-bottom: 8px; }
.card-desc { font-size: 14px; color: var(--text-light); line-height: 1.6; margin-bottom: 16px; }
.card-link { font-size: 14px; font-weight: 600; }

/* ===== Meal Grid ===== */
.meal-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.meal-card {
  background: #fff; border-radius: 12px; padding: 24px; border: 1px solid var(--border);
  transition: all 0.25s;
}
.meal-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-3px); }
.meal-phase {
  display: inline-block; background: var(--pink); color: #fff;
  font-size: 12px; font-weight: 600; padding: 3px 10px; border-radius: 20px;
  margin-bottom: 12px;
}
.meal-card h4 { font-size: 15px; font-weight: 600; margin-bottom: 8px; }
.meal-card p { font-size: 13px; color: var(--text-light); line-height: 1.6; }

/* ===== Recovery List ===== */
.recovery-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.recovery-item {
  background: var(--bg-alt); border-radius: var(--radius); padding: 24px;
  border-left: 4px solid var(--pink); transition: box-shadow 0.2s;
}
.recovery-item:hover { box-shadow: var(--shadow); }
.recovery-item h4 { font-size: 16px; font-weight: 600; margin-bottom: 8px; }
.recovery-item p { font-size: 14px; color: var(--text-light); }

/* ===== Guide Grid ===== */
.guide-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.guide-card {
  background: #fff; border-radius: 12px; padding: 24px; border: 1px solid var(--border);
  transition: all 0.25s;
}
.guide-card:hover { box-shadow: var(--shadow-hover); border-color: var(--pink); }
.guide-card h4 { font-size: 15px; font-weight: 600; margin-bottom: 8px; }
.guide-card p { font-size: 13px; color: var(--text-light); line-height: 1.6; }

/* ===== Tools Grid ===== */
.tools-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.tool-card {
  background: var(--bg-alt); border-radius: 12px; padding: 28px 20px; text-align: center;
  transition: all 0.25s;
}
.tool-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.tool-icon { font-size: 36px; margin-bottom: 12px; }
.tool-card h4 { font-size: 15px; font-weight: 600; margin-bottom: 8px; }
.tool-card p { font-size: 13px; color: var(--text-light); }

/* ===== Footer ===== */
.footer { background: #2D1B21; color: rgba(255,255,255,0.7); padding: 32px 0; text-align: center; }
.footer p { font-size: 13px; }
.footer-links { margin-top: 8px; display: flex; gap: 16px; justify-content: center; }
.footer-links a { color: rgba(255,255,255,0.5); font-size: 13px; }
.footer-links a:hover { color: #fff; }

/* ===== Mobile ===== */
@media (max-width: 900px) {
  .card-grid { grid-template-columns: repeat(2, 1fr); }
  .meal-grid { grid-template-columns: repeat(2, 1fr); }
  .recovery-list { grid-template-columns: 1fr; }
  .guide-grid { grid-template-columns: repeat(2, 1fr); }
  .tools-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
  .hero h1 { font-size: 28px; }
  .hero-desc { font-size: 15px; }
  .section-title { font-size: 24px; }
  .card-grid { grid-template-columns: 1fr; }
  .meal-grid { grid-template-columns: 1fr; }
  .guide-grid { grid-template-columns: 1fr; }
  .tools-grid { grid-template-columns: 1fr; }
  .nav { display: none; flex-direction: column; position: absolute; top: var(--header-h); left: 0; right: 0; background: #fff; border-bottom: 1px solid var(--border); padding: 16px 24px; gap: 16px; }
  .nav.open { display: flex; }
  .menu-toggle { display: block; }
}